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  1. #1
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    Help with engine build

    Hi Guys,
    Need some advice with regards to a prospective engine build.
    I have a 01 S54 with ESS VT2 500 and want to run 18 psi, without meth.
    With regards to the engine, would low cp, rods and bolts surfice and what would be the highest cp I could run?
    Cheers,
    Ajj.

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    That's a lot of boost you may be close to maxing the supercharger there if not already.

    Don't go too low on compression ratio. Managing the cylinder pressure is more important so don't pick something too low.

    I'd say 10.0:1 minimum.

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    ...thanks Sticky for your input as this is all new to me.
    Yep will be pretty much maxing it.
    So in short no need to sleeve, L19 all round and should be safe/reliable @ 18 psi without meth/water?
    Cheers.

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    What gas will you be running?

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    pump gas, 98.

    Is there something I missed or should think about?

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    Click here to enlarge Originally Posted by UK M3 Click here to enlarge
    ...thanks Sticky for your input as this is all new to me.
    Yep will be pretty much maxing it.
    So in short no need to sleeve, L19 all round and should be safe/reliable @ 18 psi without meth/water?
    Cheers.
    It's hard for me to say if you can do up to 18 psi without meth/water, what fuel?

    Edit: Answer above.

    In that case I don't know if you can do 18 psi without detonation, I doubt it.

    Evosport and VF-Engineering hit 600 whp at 16 psi on C16. They did 16 psi on 91 octane as well though. So, I doubt you will do 18 psi without race gas or water meth.

    I think shoot for 16 psi and be happy with 540 whp Click here to enlarge

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    Please forgive my naivety, I thought boost was determined on pulley size.
    OK, it would appear that there are many variables so here are my plans in full. Any thoughts would be greatly appreciated.
    My plan is to run Vortech charger, V3Si, to 18psi. Engine mods will include cams, 272/280, +1mm oversize valves, flowed/ported/polished head, L19 main and head bolts, Saad stage 1 fuel system and Aquamist water/meth kit to be added after hitting, or getting as close to 18psi. Also how much will my car benefit from running ProEFI? It was suggested to me not to use this as it does not control vanos.

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    Click here to enlarge Originally Posted by UK M3 Click here to enlarge
    Please forgive my naivety, I thought boost was determined on pulley size.
    It is to a degree but it's a measure of back pressure so if you change the cams and heads you will change the boost. I think you should shoot for a power rather than boost goal.

    Click here to enlarge Originally Posted by UK M3 Click here to enlarge
    My plan is to run Vortech charger, V3Si, to 18psi. Engine mods will include cams, 272/280, +1mm oversize valves, flowed/ported/polished head, L19 main and head bolts, Saad stage 1 fuel system and Aquamist water/meth kit to be added after hitting, or getting as close to 18psi. Also how much will my car benefit from running ProEFI? It was suggested to me not to use this as it does not control vanos.
    I'm not sure if the ProEFI controls vanos or not.

    Let's ask @undercover @undercoverangie as they carry it and are the ProEFI experts here.

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    Agree, shoot for power.
    So what combination would yield the highest bhp?

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    Click here to enlarge Originally Posted by UK M3 Click here to enlarge
    Agree, shoot for power.
    So what combination would yield the highest bhp?
    Go 10.0:1. use the V3SI blower if you want although a YSI will make more power but it's way more complicated and adds expense, and go from there. You don't even need to mess with the heads cams right now you can hit 600 whp as it sits.
    Stage 2 or 2.5 E9X M3 S65 V8 supercharger kit for sale: http://www.boostaddict.com/showthrea...r-kit-for-sale

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    600whp sounds good.
    I have found out ProEFI supports vanos. So is the Saad stage 1 fuel system and ProEFI a worthy mod to my build or overkill?

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    Click here to enlarge Originally Posted by UK M3 Click here to enlarge
    600whp sounds good.
    I have found out ProEFI supports vanos. So is the Saad stage 1 fuel system and ProEFI a worthy mod to my build or overkill?
    I don't think it's overkill at all.
    Stage 2 or 2.5 E9X M3 S65 V8 supercharger kit for sale: http://www.boostaddict.com/showthrea...r-kit-for-sale

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    Your power is going to be limited by the V3Si. I would suggest at least upgrading to a V1 or V2 T-trim. You can rev these blowers higher than the V3. With a built bottom end 600hp should be easily attainable.

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    ...hmmm. With YSi I would have to change piping, which isn't a problem but all pipes associated with the charger system, as well as the intake manifold, have been ceramic coated.

    @ THATDONFC, good plan.

    Am I correct in thinking I should be looking at the V-1 Si?
    Also will the stock intercooler from the ESS VT2 500 kit going to be large enough?
    Last question for now, is the S54 head and cams really that good so that with the above modifications, they don't need to be modified?

    Thanks guys!

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    With the YSi you would need to change more than just the piping. You would need a different bracket, dedicated sc drive belt either 10 rib serp or cog, some sort of special tensioning system if you go with the 10 rib serp. Trust me, I've done it. Click here to enlarge

    If you go with a V1 or V2 make sure to get either the Si or T trim. I suggest the T trim because it already has HD bearings and it's ready to be worked hard.

    Im not sure if your intercooler is sufficient because I am not familiar with it. Of course, I will always suggest an air to liquid cooler because I feel they are superior on these engines.

    The stock head is great. If anything, I would put on some headers with large primaries and port match the exhaust. Don't touch anything else. You do not need to modify anything in the head to make that power. Our headers have 1 7/8" primaries to a 2.5" outlet as an example.

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    I bet that drove nice! Click here to enlarge

    So out of the suggested chargers, V-1 T charger will give me highest power with my prospective mods?

    Never considered a liquid cooler before. What are my options?

    Got the SS stepped headers, ceramic coated.

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    As I stated in the PM, ProEFI DOES control Vanos, whoever told you otherwise was misinformed.

    Best,
    Angie
    Click here to enlarge

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    Click here to enlarge Originally Posted by undercoverangie Click here to enlarge
    As I stated in the PM, ProEFI DOES control Vanos, whoever told you otherwise was misinformed.

    Best,
    Angie
    The way Jason@ProEFI configures his EMS on S54 cars has been to let the DME control the vanos.

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    Click here to enlarge Originally Posted by Commanderwiggin Click here to enlarge
    The way Jason@ProEFI configures his EMS on S54 cars has been to let the DME control the vanos.

    If you want to control them you can however, it is totally unnecessary unless you have a really oddball application. So if you want to control tem just to say that you are controlling them, you can.

    Best,
    Angie
    Click here to enlarge

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    Thanks Angie and Commanderwiggin for confirming and letting me know how it's done.

    Does anyone know if there is an air to liquid cooler kit available for the S54?
    Also was thinking about coils. Basically which are best, ProEFI, Saad (high output coils) or Okada?

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    OEM coils work great! Tested at 900-1000rwhp and work fine. The ProEFI/SAAD coils are a moneygrab.

    Okadas have a mixed track record...not worth it imo.

    And the ProEFI coils with SAAD coil mount look hideous. Seen them in person...haven't heard of one person who hasn't said that they're ugly as sin.

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    I can imagine the oem one are great. Don't suppose you know their output?

    Okadas, everyone I chatted to, who have them, say they're excellent. Anyone know their output?

    A for the ProEFi/Saad, yep not my thing but if there is a performance gain then they'll go on.

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    Click here to enlarge Originally Posted by undercoverangie Click here to enlarge
    If you want to control them you can however, it is totally unnecessary unless you have a really oddball application. So if you want to control tem just to say that you are controlling them, you can.

    Best,
    Angie
    I would strongly agree with this.
    Stage 2 or 2.5 E9X M3 S65 V8 supercharger kit for sale: http://www.boostaddict.com/showthrea...r-kit-for-sale

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    Click here to enlarge Originally Posted by UK M3 Click here to enlarge
    I can imagine the oem one are great. Don't suppose you know their output?

    Okadas, everyone I chatted to, who have them, say they're excellent. Anyone know their output?

    A for the ProEFi/Saad, yep not my thing but if there is a performance gain then they'll go on.
    Honestly you'll be fine on the OEM coils.
    Stage 2 or 2.5 E9X M3 S65 V8 supercharger kit for sale: http://www.boostaddict.com/showthrea...r-kit-for-sale

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    Hmmm, ok.
    Was looking for higher output coils for better combustion with the inclusion of water/meth.

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